INDIO, Calif.  By the end of Coachella, over 100 bands had fanned out across five stages, more than 150,000 people had sweltered through the desert heat and at least as many bottles of water had been guzzled.

But there was one who rose above all others.

Prince, in his Saturday evening headlining performance, firmly established himself in Coachella lore among famous concerts from years past, including the Pixies and Rage Against the Machine. Prince, for certain, didn't plan to share the mantle.

"From now on, this is Prince's house!" he declared at the end of his set, which went well beyond midnight.

Few seemed inclined to argue after Prince put on a funky, rollicking show that featured passionate performances of classics like "Let's Go Crazy" and "Purple Rain," as well as unexpected and creative covers of Radiohead ("Creep") and the Beatles ("Come Together").

Prince followed another much-anticipated performance by the newly reformed Portishead, which filled the night air with steely, cool trip-hop and gritty, fierce new songs such as "Machine Gun." Singer Beth Gibbons, who tightly clutched the microphone with both hands throughout, broke from her focus at the end of the set to hop off stage and gleefully run along the crowd, shaking hands.

Walking off stage, Geoff Barrow, the band's soundscapist, referred to Portishead's decade of dormancy: "Thanks for waiting," he told the crowd.

Friday night's headliner, surfer singer-songwriter Jack Johnson, appeared too mellow for the plum gig, as many left the festival grounds as he played. He followed a performance by the Verve, another reunited British outfit. Their psychedelic Brit Pop sounded of another era but was still impressively powerful and self-assured.

Sunday night's headliner was Roger Waters. With smoke machines churning around the stage and audience, a thicker atmosphere was created for Waters to play both Pink Floyd classics and some new material.

Waters greeted the crowd, many of whom were die-hard Floyd fans, with a broad smile and his fist raised to the audience. Among the favorites in the first half of his set were "Shine On You Crazy Diamond" and "Have a Cigar."

Coachella, which is put on by concert promoter Goldenvoice, is a hugely diverse mix of sights and sounds -- and there were many over the weekend. The uber-cool MC M.I.A packed them into the Sahara Tent on Saturday night, where even the backstage area was teaming with at least a hundred clamoring for her.

I'm From Barcelona, which, alas, is from Sweden, made perhaps the festival's best entrance, taking the stage Sunday 17 strong and bearing dozens of giant red balloons. As the balloons circulated and confetti rained down, it launched into "Treehouse," and lead singer Emanuel Lundgren jumped into the crowd.

The Denver-based gypsy band DeVotchKa also displayed theatrics. As the four-piece group thumped away on upright bass and tuba, the Amazing Slavic Sisters acrobatically ascended 30 feet up hanging tapestries flanking the stage.

Many more played, as well, among them the Raconteurs, My Morning Jacket, Death Cab for Cutie, Kraftwerk, Vampire Weekend, Fatboy Slim, MGMT and Aphex Twin.

Located in the Southern California desert a few hours' drive from Los Angeles, Coachella has emerged as one of the country's biggest music events and the unofficial kickoff to the summer festival season.

"Festivals usually smell a lot worse than this one," National lead singer Matt Berninger told the crowd while playing Friday. "You guys smell really nice."

Battalion Chief Bart Chambers of the Indio Fire Department said about 25 people had been hospitalized by late Sunday afternoon, many of them because of heat-related injuries.

Coachella is a well-run festival where five stages are laid out in an expansive U-shape, behind which a veritable racecourse of golf carts runs, shuttling musicians and VIPs to the stages. Hundreds of fans camped on the festival grounds, and a few dozen took more posh digs in $4,000 tents, complete with air conditioning and candles.

In the middle of the grounds are giant sculptures, typically brought from the Burning Man festival. At night, many of them glow, and the surrounding mountain ranges and palm trees create a memorable environment. Notably absent is corporate advertising.

Coachella's proximity to Los Angeles also has traditionally meant a visible celebrity contingent. Though Paris Hilton and Alicia Silverstone were among those in attendance, the festival didn't appear to have the same celeb buzz as it has in years past -- like when Madonna played in 2006.

Sean Penn did stop by on Sunday to speak twice, urging the young crowd to be more politically active and join him on a cross-country bus trip leaving Monday for New Orleans.

Wearing a T-shirt and jeans and smoking a cigarette while he sat on a stool, Penn said he unfortunately couldn't perform his "a cappella Celine Dion cover act" since he had "compromised his upper register."

He was one of the few to raise political issues at Coachella, where the crowd was more eager to, as Prince sang, go crazy.

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Actor Sean Penn simulates a dance move as he addresses the crowd during the third day of the Coachella Valley Music and Arts Festival in Indio, Calif., Sunday, April 27, 2008. (AP Photo/Chris Pizzello)